[Railcarmover]

Diesel grade oils have higher shear properties,better detergent and soot entrainment properties and better viscosity modifier properties than gasoline engine grade oils.Entrainment properties hold dirt and soot in suspension,allowing it to be removed with the drain instead of depositing on parts,critical with engine not running an air filter.Shear means they handle load better,good for soft babbit bearings.Improved Viscosity modifier properties means it resists breakdown when running multi viscosity oils..15-40 wt breaks down to 15w when the modifier fails,a higher stability factor means higher resistance to breakdown.